1) As per tag cloud component document it says tag cloud can be dynamic based on page impressions , but how much dynamic this can be as most of the pages will be served from dispatcher cache and how would publish get to know about updates on page visits?
2) additionally i guess this page impression is based on the page statistics collected via https://helpx.adobe.com/experience-manager/kb/PageViewTracking.html
3) and per this could impact the performance as publish will be loaded to manage statistics to enable tag cloud perform dynamically
http://help-forums.adobe.com/content/adobeforums/en/experience-manager-forum/adobe-experience-manage...
4) So overall tag cloud might not be a realistic option and has to be managed with analytic providers like GA,Sitecatalyst
Any thoughts please share ?